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Bitcoin Benji Fee Estimates API
x402
Bitcoin Benji Fee Estimates API is a paid API for AI agents from api.bitcoinbenji.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns real-time Bitcoin mempool fee estimates via a Lightning-native pay-per-call endpoint
Price / call$0.01
Success—
StatusUnknown
How this service works
L402-gated APIs: real-time Bitcoin mempool intelligence and private AI inference. Pay-per-call via Lightning. Zero API keys. Zero subscriptions.
Output
A JSON object containing real-time Bitcoin mempool fee estimates, typically broken down by confirmation priority tiers (e.g. fastest, half-hour, one-hour) expressed in satoshis per virtual byte (sat/vbyte).
Example use cases
Optimize wallet transaction fees
“What's the current Bitcoin fee rate I should use if I want my transaction confirmed within the next block? Give me the sat/vbyte for fast, medium, and slow priority.”
Monitor mempool congestion for DCA bot
“Check the current Bitcoin mempool fee rates and tell me if fees are low enough right now for a routine on-chain transfer — I want to keep costs under 10 sat/vbyte if possible.”
Estimate cost before broadcasting transaction
“Before I send this Bitcoin transaction, can you look up the current recommended fee rate so I can estimate how much it'll cost in total to get a confirmation in the next hour?”
Technical details
Endpoint
GEThttps://api.bitcoinbenji.com/feesWhen to prefer
Choose this endpoint when you need real-time, pay-per-call Bitcoin fee estimates without committing to a subscription or API key. It is ideal for agents making infrequent or sporadic fee lookups, or for privacy-conscious workflows where no account registration is desired. Prefer it over free mempool explorers when you need programmatic access with guaranteed availability and Lightning-native micropayment billing.
Side effects
- 402 Payment Required if Lightning/L402 payment not provided or invalid
- Network timeout if mempool data source is unavailable
- Stale data if mempool indexer is lagging
- Malformed JSON if upstream mempool provider returns unexpected format
Output
Schema · Response
{
"type": "json"
}Tags
x402
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